Unnamed poster,
Succinctly: You're trying to write a bash script in Puppet. That's not
how it works, that's not what it's designed for, that's not how it
should be used.
However, luckily, there's a really simple and easy way to do what you're
trying to in Puppet:
Class['myapp::phase1'] -> Class['myapp::phase2'] ->
Class['myapp::phase3']
If there are *specific* things that you need to make sure happen before
a given action (like making sure a package is installed before a config
file is created/changed), that's what "requires" is for.
You may want to refer to John Bollinger's 2014-01-03 reply to the
"wondering if I want to[sic] much now" thread, which gives some
excellent descriptions on 'how not to Puppet':
https://groups.google.com/d/msg/puppet-users/IGqjPpVCrKA/VcUKiV3xfPkJ
-Jason
On 02/04/2014 06:11 PM, [email protected] wrote:
> Hi, im trying to work some logic into a puppet class and I'm not sure
> the best way to do it. For this application, I have an installation
> phase, a setup phase, and then a maintenance phase.
>
> My current method of maintaining this is to call the relevant subclass
> using "include". I then have to go comment out two of the 3 includes
> depending on which phase i'm on. This of course means that I have to
> shut off puppet on all the nodes im not directly working on.
>
> I would like to use the following logic in my class to control this.
> Could somebody help me with the proper syntax to get this working?
>
>
> class myapp {
>
> Class['myapp::phase1'] only if [ ! -e /path/to/puppet.phase ]
> # myapp::phase1 will echo 'phase2' into /path/to/puppet.phase
> once all requirements are met
>
> Class['myapp::phase2'] only if [ $(cat /path/to/puppet.phase) ==
> 'phase2' ]
> # myapp::phase2 will echo 'phase3' into /path/to/puppet.phase
> once all requirements are met
>
> Class['myapp::phase3'] only if [ $(cat /path/to/puppet.phase) ==
> 'phase3' ]
> }
>
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